Let me know the aircraft that you examine or fly, that does not have one minor non-structural crack in it somewhere, after several thousands hours of operation.
Onetrack, I was asking as you posted with a confident engineering outlook.
I have some basic engineering theory, but more a journeyman than a theorist.
After several thousand hours of operation I would expect to find minor cracking, even in structural components. The Airbus 380 in question did not have thousands of hours of operation.
One has carried out inspections on aircraft over the last several years and have not noticed cracking in the rib to skin attach on any.
Airbus do not consider it an immediate airworthiness isse which should allay safety concerns.
Cheers